2a thread class right-hand 1.038" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.772" thread length flat countersunk head style 32 thread quantity per inch anodize screw surface treated unc thread series
3a thread class right-hand 0.296" thread length flat countersunk head style 24 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.407" thread length round extended washer head style 32 thread quantity per inch cadmium screw surface treated unjc thread series